Look at the attachment. Hope it helps!
Answer:
i believe it's 20%
Step-by-step explanation:
girls: 3
boys: 2
ratio: 3:2
so, 20%
2, 1, and 5 are the domain. It's not a function though because there are two 4's in the first place. I would say the answer is D.
C i believe since your counting the negative one as well